CN104149804B - There is the rail vehicle roof-mounted air-condition unit of sand-proof function - Google Patents
There is the rail vehicle roof-mounted air-condition unit of sand-proof function Download PDFInfo
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- CN104149804B CN104149804B CN201410370453.3A CN201410370453A CN104149804B CN 104149804 B CN104149804 B CN 104149804B CN 201410370453 A CN201410370453 A CN 201410370453A CN 104149804 B CN104149804 B CN 104149804B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
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Abstract
The present invention relates to a kind of rail vehicle roof-mounted air-condition unit with sand-proof function, comprise a housing, housing is fixedly installed on car body, fixedly mount respectively a side cover plate in the both sides of housing, each side cover plate is by top board, the uncovered structure of a side that side plate and base plate surround, top board is fixedly connected with housing with the side of base plate, side plate tilts laterally, on each base plate, near the angle being connected with side plate, sediment ejection opening is set, on side plate, be provided with condensation air inlet and/or new wind entrance and/or the useless air port of discharging, and respectively by opening the condensation chamber opening on housing, condensation chamber in new wind chamber opening and useless row's chamber opening and housing, new wind chamber, useless row chamber is communicated with. the present invention, by the structure of side cover plate, effectively intercepts most of sand and dust in air-conditioning unit outside, simultaneously, tiny sand and dust to approaching side cover plate inside can be collected, discharge, effectively prevent dust storm from air-conditioning unit into the car, ensure with fresh air in compartment to improve ride quality.
Description
Technical field
The present invention relates to a kind of rail vehicle air conditioner group, particularly a kind of rail vehicle with sand-proof functionRoof-mounted air-condition unit, belongs to railway vehicle air conditioner manufacturing technology field.
Background technology
When rail vehicle is in the time that run in the comparatively serious area of the dust and sand weather of being everlasting, sand and dust can pass through the new of air-conditioning unitWind entrance etc. enters interior, causes dust concentration in compartment to exceed standard, and affects the air quality in compartment, sand and dustAlso can enter air-conditioning condenser with condensation air, cause blockage of condenser, thereby affect air conditioner refrigeration effect, reduceRide quality. For ensureing the air quality in compartment, improve ride quality, existing air-conditioning unit exceptArrange outside filter in new wind porch, also in the bottom of condensation chamber, the below that is positioned at condenser arranges water fenderAnd dust-collecting box, extraneous sand and dust are deposited in the dust-collecting box of bottom after condenser. Because condenser is near housingCondensation air inlet, under the effects such as sleet, sand and dust can stick on condenser, through operation for a long time, condenserHeat exchange efficiency can reduce gradually, and then can have a strong impact on the refrigerating efficiency of air-conditioning unit, also easily causes air-conditioning unitDamage, and, because sand and dust are collected in dust-collecting box, so need often to clean dust-collecting box, cause manpowerWaste with material resources.
Summary of the invention
Main purpose of the present invention is to address the above problem and is not enough, and a kind of sand discharge better effects if is provided, and has windproofThe rail vehicle roof-mounted air-condition unit of husky function.
For achieving the above object, technical scheme of the present invention is:
A rail vehicle roof-mounted air-condition unit with sand-proof function, comprises a housing, and described housing is solidDingan County is loaded on car body, fixedly mounts respectively a side cover plate in the both sides of described housing, and each described side cover plate isThe uncovered structure of a side being surrounded by top board, side plate and base plate, the side of described top board and base plate and described housing are solidFixed connection, described side plate tilts laterally, on each described base plate, establishes near the angle being connected with described side platePut sediment ejection opening, on described side plate, be provided with condensation air inlet and/or new wind entrance and/or the useless air port of discharging, and pointNot by open condensation chamber in condensation chamber opening on described housing, new wind chamber opening and useless row's chamber opening and housing,New wind chamber, useless row chamber are communicated with.
Further, all offer described condensation air inlet on the described side plate of both sides, described new wind entrance is offeredWherein, on the described side plate of a side, described useless discharge air port is opened on the described side plate of opposite side;
Between the described condensation air inlet of a side and new wind entrance, the first dividing plate is set, by the described side cover by this sideThe spatial separation that plate surrounds becomes two relatively independent condensation ventilation spaces and new wind admission space;
The described condensation air inlet of opposite side and the useless air port of discharging are interconnected, and are surrounded by the described side cover plate of this sideSpace is condensation ventilation space, or at described condensation air inlet and useless discharge between air port, second partition is set, willThe spatial separation being surrounded by the described side cover plate of this side becomes two relatively independent condensation ventilation spaces and useless row to take a breath emptyBetween.
Further, between described side cover plate and described housing, be welded and fixed or be fixedly connected with by securing member.
Further, described base plate is arranged obliquely by housing direction described in lateral.
Further, described sediment ejection opening is the multiple strip openings along the length direction spaced set of described side cover plate.
Further, in described new wind porch, new wind filter is set, described new wind filter comprises a frameFrame arranges labyrinth type filter in described framework, in the inside of the hollow tube of described labyrinth type filter, electricity is setHeater strip or electric heating tube.
Further, the condensation chamber opening on described housing and/or new wind chamber opening and/or useless row chamber opening part are fixedThe first filter assemblies is installed.
Further, the evaporimeter inlet side in described evaporation cavity is also provided with the second filter assemblies.
Further, described the first filter assemblies and the second filter assemblies are nonwoven filter screen or paper filter screen.
Further, respectively arrange one be fusiform kuppe in the both sides, front and back of described housing, described kuppe is logicalCrossing syndeton is fixedly connected with described housing.
To sum up content, the rail vehicle roof-mounted air-condition unit with sand-proof function of the present invention, with existing skillArt is compared, and tool has the following advantages:
(1) by the structure of side cover plate, most of sand and dust are effectively intercepted in air-conditioning unit outside, meanwhile, to enteringThe tiny sand and dust that enter side cover plate inside can be collected, discharge, and effectively prevent dust storm from air-conditioning unit into the car,Ensure with fresh air in compartment to improve ride quality.
(2) sediment ejection opening is arranged on the outside of housing, filters the sand and dust of collecting, can be direct at any time by sediment ejection openingOutside car, without separately establish again structure by collected sand and dust discharged to outside car, or often cleaning for collectingThe dust-collecting box of sand and dust, reduces costs.
(3) many places such as opening, evaporimeter inlet side on new wind entrance, housing arrange filter again, enter oneStep ensures the air quality in compartment.
(4) space that useless row chamber and condensation chamber surround by side cover plate is interconnected, can be by the cooling sky of discharging in carGas utilizes to air-conditioning secondary as condensation air, has improved air conditioner refrigeration effect, saves the energy.
(5) side cover plate is fixedly mounted on separately the both sides of housing, can on the basis of existing air-conditioning unit, changeMake, without the structure that changes existing air-conditioning unit, cost is low, highly versatile.
Brief description of the drawings
Fig. 1 is the embodiment of the present invention one structural representation;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the A-A cutaway view of Fig. 2;
Fig. 4 is the new wind entrance structure of the present invention schematic diagram;
Fig. 5 is the B-B cutaway view of Fig. 4.
As shown in Figures 1 to 5, housing 1, mount pad 2, bolt 3, side cover plate 4, top board 5, side plate 6, base plate 7,Sediment ejection opening 8, evaporation cavity 9, condensation chamber 10, new wind chamber 11, useless row chamber 12, condenser 13, condensation fan 14, coldSolidifying air outlet 16, new wind entrance 17, condensation air inlet 18, useless air port 19, the first dividing plates 20 of discharging, bolt 21,Kuppe 22, sand grid 23, new wind filter 24, framework 25, labyrinth filter 26, hollow tube 27, electricityHeating tube 28, Connection Block 29.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
Embodiment mono-:
As shown in Figure 1 to Figure 3, the rail vehicle roof-mounted air-condition unit with sand-proof function of the present invention,Comprise a housing 1, the both sides of housing 1 are provided with elongated mount pad 2, and mount pad 2 is aluminium section bar or stainless steel knotStructure, mount pad 2 is fixedly installed in car body (not shown) by bolt 3, and the latter half of housing 1 is located inThe inside of car body, only has the first half to be exposed at outside car body.
As shown in Figure 1, in the present embodiment, in the inside of housing 1, be separated into evaporation cavity 9, condensation chamber 10, new wind chamber11 and useless row chamber 12, evaporation cavity 9 is arranged on the left side of condensation chamber 10, and new wind chamber 11 and useless row chamber 12 are arranged on condensation chamber10 right side. Evaporimeter, indoor fan etc. are arranged in evaporation cavity 9, condenser 13, condensation fan 14, compressorDeng being arranged in condensation chamber 10, compressor chamber also can be arranged on separately the both sides of evaporation cavity 9 as required. In condensationCondensation air outlet 16 is offered on blower fan 14 tops, and condenser 13 is two both sides that are arranged on respectively condensation fan 14. SteamSend out the indoor air outlet offering on the sidewall of housing 1 in chamber 9 to blowing in compartment, offer in the bottom of housing 1 forIndoor return air enters the indoor return air inlet of air-conditioning unit. New wind chamber 11 is interior arranges new wind blower fan, and new wind chamber 11 is by logicalRoad is communicated with evaporation cavity 9, and under the effect of new wind blower fan, the outer fresh air of car enters in new wind chamber 11, then passes throughPassage enters in evaporation cavity 9 and mixes with indoor return air, through with evaporimeter heat exchange after send into compartment by indoor air outletIn, for lowering the temperature in compartment. On the bottom surface of the useless housing 1 of arranging chamber 12, offer useless row import, in the useless row interior setting in chamber 12Useless exhaust blower, the waste gas in compartment enters useless row chamber 12 by useless row import under the effect of useless exhaust blower.
The inside of housing 1 also can only be separated into evaporation cavity, condensation chamber and new wind chamber, and new wind chamber is arranged on evaporation cavityInside, under the effect of evaporation fan, introduces new wind chamber by new wind, new wind from new wind chamber out directly and indoorReturn air mix, then through with evaporimeter heat exchange after enter in compartment by indoor air outlet, for lowering the temperature in compartment.
As shown in figures 1 and 3, fixedly mount respectively a side cover plate 4 in the both sides of housing 1, side cover plate 4 is along housing 1The elongated setting of length direction, side cover plate 4 is installed on the first half of housing 1, is positioned at the outside of car body. Each sideCover plate 4 is the uncovered structures of a side that surrounded by top board 5, side plate 6 and base plate 7, and top board 5, side plate 6 and base plate 7 are oneForming structure, is welded and fixed between the side of top board 5 and the roof of housing 1, also can be bolted to connection,Between the sidewall of the side of base plate 7 and housing 1, be welded and fixed or be bolted to connection. Side cover plate 4 is fixing peace separatelyBe contained in the both sides of housing 1, can conveniently on the basis of existing roof-mounted air-condition unit, transform, existing without changingThe structure that has air-conditioning unit, cost is low, and highly versatile goes for the air-conditioning unit of various overhead types.
Arc transition between top board 5 and side plate 6, to reduce the resistance of motion, side plate 6 tilts laterally, in the present embodiment,On side plate 6, offer new wind entrance 17, condensation air inlet 18 and the useless air port 19 of discharging, because 13 points of condensers are located at twoSide, so be provided with condensation air inlet 18 on two side plates 6, new wind entrance 17 is relative with useless 19, the air port of dischargingBe arranged on two side plates 6. If useless row chamber 12 is not set in air-conditioning unit, offers new wind and enter on a side plate 6Mouth 17 and condensation air inlet 18 are only opened condensation air inlet 18 on another side plate 6.
Base plate 7 is arranged obliquely by lateral housing 1 direction, between base plate 7 and side plate 6 shape in an angle, at thisAngle arranges sediment ejection opening 8, and sediment ejection opening 8 is to open along multiple strips of the length direction spaced set of side cover plate 4Mouthful. Base plate 7 arranges obliquely and can play the effect that stops sand and dust, from new wind entrance 17, condensation air inlet 18, uselessDischarge the sand and dust that air port 19 enters, kept off by base plate 7, the sand and dust that keep off are along the downward landing of base plate 7, finalDischarge from the sediment ejection opening 8 of bottom. Sand and dust are at any time directly discharged to outside car, without separately establishing structure by collected sand and dust againOutside car, or often cleaning, for collecting the dust-collecting box of sand and dust, significantly reduces costs, and reduces labour,And sand and dust directly discharge outside car, can not enter housing 1 inside of air-conditioning unit, avoid sand and dust to enter by air-conditioning unitEnter in compartment, ensure the air quality in compartment.
As shown in Figure 1 to Figure 3, first dividing plate 20, the first dividing plates 20 are set are arranged on the side cover plate 4 of a side is interiorBetween condensation air inlet 18 and new wind entrance 17, the space that the outer wall of the side cover plate 4 by this side and housing 1 is surrounded is dividedBe divided into two independently spaces, one is condensation ventilation space, and one is new wind admission space, changes being positioned at condensationOn side plate 6 within the scope of headroom, offer three condensation air inlets 18, at the side plate that is positioned at new wind admission space scopeOn 6, offer a new wind entrance 17. On the side plate 6 of the side cover plate 4 of opposite side, offer equally three condensation air inlets 18With a useless air port 19 of discharging, in the present embodiment, three condensation air inlets 18 interconnect mutually with a useless air port 19 of dischargingLogical, the space being surrounded by the side cover plate 4 of this side and the outer wall of housing 1 is that be interconnected and all empty as condensation ventilationBetween.
Corresponding, have a condensation chamber opening and a new wind chamber opening in a side of housing 1, at housing 1Opposite side has a condensation chamber opening equally, also has a useless row chamber opening, and the air outside car is by two sidesSix condensation air inlets 18 on cover plate 4 enter the condensation ventilation space of housing 1 both sides, then by two of housing 1 both sidesIndividual condensation chamber opening enters in the condensation chamber of housing 1, carries out after heat exchange, at the work of condensation fan 14 with condenser 13With under discharge from the condensation air outlet 16 at housing 1 top. Fresh air outside car is under the effect of new wind blower fan, from oneNew wind entrance 17 on side side cover plate 4 enters new wind admission space, then enters newly by the new wind chamber opening on housing 1Wind chamber, fresh air enters in evaporation cavity 9 and mixes with indoor return air through passage. Waste gas in compartment is at useless exhaust blowerEffect under enter useless row chamber 12 by useless row import, then enter the condensation of this side by the useless row chamber opening on housing 1Ventilation space, last under the effect of condensation fan 14, enter from the condensation chamber opening of this side with together with air outside carEnter in the condensation chamber 10 of housing 1, suck and carry out secondary utilization from the cooling-air of discharging in the compartment blower fan 14 that is condensed,Thereby can improve the refrigeration of air-conditioning, save the energy.
In the space being surrounded by two side cover plates 4, except new wind admission space, remainder is all condensation ventilationSpace, and on side plate 6 corresponding to condensation ventilation space, offered altogether six condensation air inlets 18 and useless a dischargeAir port 19, because condensation air inlet 18 and the useless air port 19 of discharging are interconnected, on side plate 6, be equivalent to offer seven coldCoagulate air inlet 18, greatly increased the ventilation volume of condensation air, improve condensing heat-exchange efficiency.
In the present embodiment, sand grid 23 is set, sand grid 23 at condensation air inlet 18 and useless 19 places, air port that dischargeBe fixedly mounted on side plate 6 by screw, the each horizontal stripe homocline in sand grid 23 is bent downwardly setting, is beneficial toMost of sand and dust are blocked in to the outside of side cover plate 4, by the sand and dust in sand grid 23 approaching side cover plates 4, are hinderedKeep off and be deposited on base plate 7, finally discharging car from the sediment ejection opening 8 of base plate 7 bottoms.
In addition, at new wind entrance, 17 places arrange new wind filter 24, as shown in Figure 4 and Figure 5, and new wind filter24 comprise a framework 25, and at the interior labyrinth filter 26 that arranges of framework 25, framework 25 is fixed by screws on side plate 6,Labyrinth filter 26 is made up of three row's filtration members, and outermost filtration members is row's hollow tube 27, at each hollow tube27 inside is provided with an electric heating tube 28, and electrical heating wire also can be set. It is heavy that electric heating tube 28 can meltAmass the long-pending snow and ice on new wind filter 24, also can play certain heat effect to new wind, to improve the winterComfortableness in season compartment. Be provided with the outlet of draining and sand discharge in the bottom of framework 25, sand and dust and water are through threeAfter row's filtration members, sedimentation is also discharged by the draining of framework 25 bottoms and the outlet of sand discharge, is collected in the base plate of side cover plate 4On 7, more finally drain into outside car by the sediment ejection opening 8 on base plate 7.
In order further to guarantee the air quality in compartment, in the present embodiment, be provided with multi-filtering structure, at shellCondensation chamber opening on body 1, new wind chamber opening, the opening part fixed installation of useless row chamber are filtered as first of single filterAssembly, the first filter assemblies can adopt nonwoven filter screen or paper filter screen etc., and the first filter assemblies has further stoppedThe tiny sand and dust that enter from car.
Further, be provided as the second filter assemblies that filter the second level in the inlet side of evaporimeter, second filters againAssembly also adopts the nonwoven filter screen that filtering accuracy is higher, new wind and return air after the second filter assemblies filters, thenCarry out heat exchange with evaporimeter, finally send in compartment.
As depicted in figs. 1 and 2, also respectively arrange one in the both sides, front and back of housing 1 and be fusiform kuppe 22, water conservancy diversionCover 22 is fixedly connected with housing 1 by syndeton. The surrounding of kuppe 22 is fixedly connected with housing 1 by bolt,Inside at kuppe 22 is also provided with Connection Block 29, and Connection Block 29 is fixing company of end wall with housing 1 by bolt 21Connect.
Embodiment bis-:
Be with embodiment mono-difference, arrange one second at condensation air inlet 18 and useless discharge between air port 19Dividing plate (not shown), the spatial separation that second partition surrounds the side cover plate 4 of this side become two relatively independentCondensation ventilation space and useless row's ventilation space, the waste gas in compartment enters by useless row import under the effect of useless exhaust blowerEnter the row of giving up chamber 12, then by the useless row that the useless row chamber opening on housing 1 enters this side space of taking a breath, finally from side plate 6On useless discharge air port 19 discharge outside car. Car outer air only enters condensation ventilation from three condensation air inlets 18 of this sideSpace, then enter in condensation chamber 10 by the condensation chamber opening on housing 1.
As mentioned above, given scheme content, can derive similar technical scheme by reference to the accompanying drawings. In every case beDo not depart from the content of technical solution of the present invention, any letter of above embodiment being done according to technical spirit of the present inventionSingle amendment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (11)
1. a rail vehicle roof-mounted air-condition unit with sand-proof function, comprises a housing, described housingBe fixedly installed on car body, it is characterized in that: fixedly mount respectively a side cover plate in the both sides of described housing, everyIndividual described side cover plate is the uncovered structure of a side being surrounded by top board, side plate and base plate, the side of described top board and base plateLimit is fixedly connected with described housing, and described side plate tilts laterally, on each described base plate near with described side plateThe angle connecting arranges sediment ejection opening, is provided with condensation air inlet, new wind entrance and the useless wind of discharging on described side plateMouthful, on described housing, correspondence is offered condensation chamber opening, new wind chamber opening and useless row chamber opening, described condensation air intakeMouth, new wind entrance, the useless air port of discharging are respectively by corresponding condensation chamber opening, newly wind chamber opening and useless row chamber openingBe communicated with condensation chamber corresponding in housing, new wind chamber, useless row chamber.
2. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 1, its featureBe: on the described side plate of both sides, all offer described condensation air inlet, described new wind entrance is opened in wherein oneOn the described side plate of side, described useless discharge air port is opened on the described side plate of opposite side;
Between the described condensation air inlet of a side and new wind entrance, the first dividing plate is set, by the described side cover by this sideThe spatial separation that plate surrounds becomes two relatively independent condensation ventilation spaces and new wind admission space;
The described condensation air inlet of opposite side and the useless air port of discharging are interconnected, and are surrounded by the described side cover plate of this sideSpace is condensation ventilation space, or at described condensation air inlet and useless discharge between air port, second partition is set, willThe spatial separation being surrounded by the described side cover plate of this side becomes two relatively independent condensation ventilation spaces and useless row to take a breath emptyBetween.
3. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 1, its featureBe: between described side cover plate and described housing, be welded and fixed or be fixedly connected with by securing member.
4. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 1, its featureBe: described base plate is arranged obliquely by housing direction described in lateral.
5. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 1, its featureBe: described sediment ejection opening is the multiple strip openings along the length direction spaced set of described side cover plate.
6. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 1, its featureBe: in described new wind porch, new wind filter is set, described new wind filter comprises a framework,Labyrinth type filter is set in described framework, in the inside of the hollow tube of described labyrinth type filter, electrical heating wire is setOr electric heating tube.
7. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 1, its featureBe: the condensation chamber opening on described housing and/or new wind chamber opening and/or the opening part fixed installation of useless row chamber theOne filter assemblies.
8. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 1, its featureBe: in described housing, also have evaporation cavity, evaporimeter and indoor fan are arranged in evaporation cavity, in described steamingThe evaporimeter inlet side of sending out in chamber is also provided with the second filter assemblies.
9. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 7, its featureBe: described the first filter assemblies is nonwoven filter screen or paper filter screen.
10. the rail vehicle roof-mounted air-condition unit with sand-proof function according to claim 8, its featureBe: described the second filter assemblies is nonwoven filter screen or paper filter screen.
The 11. rail vehicle roof-mounted air-condition units with sand-proof function according to claim 1, its featureBe: respectively arrange one in the both sides, front and back of described housing and be fusiform kuppe, described kuppe is by connectingStructure is fixedly connected with described housing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370453.3A CN104149804B (en) | 2014-07-30 | 2014-07-30 | There is the rail vehicle roof-mounted air-condition unit of sand-proof function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410370453.3A CN104149804B (en) | 2014-07-30 | 2014-07-30 | There is the rail vehicle roof-mounted air-condition unit of sand-proof function |
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| CN104149804A CN104149804A (en) | 2014-11-19 |
| CN104149804B true CN104149804B (en) | 2016-05-25 |
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| CN104527684B (en) * | 2014-12-08 | 2017-10-03 | 中车青岛四方机车车辆股份有限公司 | A kind of rail vehicle air conditioner group installed under car |
| GB2542315B (en) * | 2014-12-08 | 2020-12-02 | Crrc Qingdao Sifang Co Ltd | Air conditioning unit of track vehicle mounted under vehicle |
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| CN107891877A (en) * | 2017-11-08 | 2018-04-10 | 中车长春轨道客车股份有限公司 | Wind resistance sandbox EMUs air-conditioner set and the rail vehicle including the air-conditioner set |
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| CN109204355A (en) * | 2018-09-17 | 2019-01-15 | 中车青岛四方机车车辆股份有限公司 | A kind of air-conditioner set of integrated useless row function |
| CN111319643B (en) * | 2018-12-13 | 2021-03-16 | 中车唐山机车车辆有限公司 | Ventilation structure |
| CN110667621A (en) * | 2019-10-28 | 2020-01-10 | 中车南京浦镇车辆有限公司 | Air conditioning unit structure integrating waste discharge |
| CN112319531A (en) * | 2020-11-10 | 2021-02-05 | 中车青岛四方机车车辆股份有限公司 | Sand-discharging dust-removing air conditioning unit and railway vehicle |
| CN113002576A (en) * | 2021-01-25 | 2021-06-22 | 中车大连机车研究所有限公司 | Vehicle-mounted air conditioner for train |
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| CN104149804A (en) | 2014-11-19 |
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